CN203218457U - Dual-band dual-circular-polarization aperture sharing reflector antenna - Google Patents
Dual-band dual-circular-polarization aperture sharing reflector antenna Download PDFInfo
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- CN203218457U CN203218457U CN 201320205715 CN201320205715U CN203218457U CN 203218457 U CN203218457 U CN 203218457U CN 201320205715 CN201320205715 CN 201320205715 CN 201320205715 U CN201320205715 U CN 201320205715U CN 203218457 U CN203218457 U CN 203218457U
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Abstract
The utility model discloses a dual-band dual-circular-polarization aperture sharing reflector antenna including a main reflector (1), a vice reflector (2), an X-band feed source (3)and S-band feed sources (4) , wherein the X-band feed source (3)and the S-band feed sources (4) adopt dual circular polarization and share the same set of main reflector (1) and vice reflector (2) and are all arranged at the real focus of the vice reflector; the S-band feed sources (4) surround around the X-band feed source (3); the electric axis of the X-band feed source (3)coincides with the electric axis of the S-band feed sources (4); and the same servo mechanism is used for driving the antenna and feedback is given through combination of the X-band feed source (3)and the S-band feed sources (4). The dual-band dual-circular-polarization aperture sharing reflector antenna gives the feedback through the combination of the X-band feed source (3) and the S-band feed sources (4) so that the antenna is more compact and reasonable in structure and smaller in size. Moreover, electric axis coincidence is realized.
Description
Technical field
The utility model relates to a kind of vehicular pulse instrumentation radar two waveband double-circle polarization bore reflector antenna altogether.
Background technology
In modern radar system, along with the raising of the system integration and functional requirement, an antenna often must be operated in a plurality of frequency ranges simultaneously, and this is a new trend of radar development.In addition, along with the development of mobile communications industry, the equipment that uses on the moving body is more and more, and the antenna number of use is also in corresponding increase.Situation using a plurality of frequency ranges takes up room for reducing cost and reducing, the multifrequencyization of antenna, and two (many) wave band antennas are important development directions of radar.The shared-aperture of prior art S/X wave band synthetic aperture radar dual-band dual-polarized (DBDP) microstrip antenna array is that S-band slit and X-band paster are staggered, and is realizing 1: 3 frequency ratio under the bore structure altogether.In the design of two wave band radiating elements, adopted and in the design in slit, S-band microstrip-fed back of the body chamber, adopted reactive to load to reduce slit and cavity size, in the design of X-band double-layer paster, loaded to improve interport isolation by the groove to main paster.Prior art vehicular pulse instrumentation radar requires circular polarized antenna to utilize target from the band signal channeling conduct in early stage, transfers radar tracking then to, and guiding is different with the tracking wave band, needs the antenna of 2 different frequency ranges to realize guiding and following function respectively.If adopt traditional single band antenna, then need two cover servomechanisms to drive the antenna of two different-wavebands; The device space that needs is big; It is consistent that the guiding antenna of the two and tracking antenna electric axis are not easy to accomplish, changes when following the tracks of possible lose objects in guiding.
Summary of the invention
Task of the present utility model provides a kind of compact conformation, is beneficial to the realization Radar Miniaturization, and the two waveband double-circle polarization that only needs a cover servomechanism to drive two different-wavebands shares reflector antenna,
The technical scheme that its technical problem that solves the utility model adopts is: a kind of two waveband double-circle polarization shares reflector antenna, comprise, X-band feed 3 and the S-band feed 4 of primary reflection surface 1, subreflector 2, employing double-circle polarization, it is characterized in that, X-band feed and S-band feed share the major and minor reflecting surface of a cover, all be positioned on the real focus of subreflector, the S-band feed is looped around around the X-band feed, and the X-band feed overlaps with the electric axis of S-band feed, use same servomechanism to drive, combine and carry out rear feed.
The utility model has following beneficial effect than prior art:
The utility model employing X-band feed and S-band feed are combined and are carried out rear feed, make structure compact and reasonable more, and volume reduces greatly, and has realized the electric axis coincidence.The two waveband that adopts shares same antenna realization guiding and the tracking that reflector antenna can use two different-wavebands of same servo-drive, has simplified equipment amount greatly, and has guaranteed to be changeed by guiding the precision problem of tracking.The S-band feed is looped around around the X-band feed, and two wave bands share cover major-minor reflectings surface, can the simplified apparatus amount, and can guarantee that the two waveband double-circle polarization that is changeed the precision of tracking by guiding is total to the bore reflector antenna.
Adopt the utility model X-band feed 3 and S-band feed 4 electric axis to overlap the two waveband double-circle polarization reflector antenna of forming, only need a cover servomechanism to drive the same antenna of two different-wavebands, simplified equipment amount greatly; Save the device space to a great extent, alleviated the weight of radar, more be conducive to realize the miniaturization of radar; The polarization mode of X-band feed and S-band feed all adopts double-circle polarization, and feeding classification all adopts the rear feed mode, and guides antenna to overlap with the tracking antenna electric axis, has improved the guiding probability greatly.
Description of drawings
Below in conjunction with specification drawings and specific embodiments the utility model is further specified.
Fig. 1 is that the utility model two waveband shares the reflector antenna organigram.
Fig. 2 is the equivalent schematic that the utility model two waveband shares reflector antenna.
Fig. 3 is X-band feed pictorial diagram.
Fig. 4 is S-band feed pictorial diagram.
Among the figure: 1. primary reflection surface, 2. subreflector, 3.X wave band feed, 4.S wave band feed, 5 electric axis.
Embodiment
Consult Fig. 1-Fig. 4.Share in the reflector antenna enforcement in pulse instrumentation radar X described below, S two waveband, the two waveband reflector antenna is made up of primary reflection surface 1, subreflector 2, X-band feed 3 and S-band feed 4.Wherein, primary reflection surface 1 is a paraboloid of revolution, subreflector is a hyperboloid of revolution, the right focus of hyperboloid concave surface overlaps with paraboloidal focus, the phase center of X-band feed 3 and S-band feed 4 all places the right focus of subreflector 2 convex surfaces, has so just formed the Cassegrain antenna of standard.X-band feed and S-band feed share the major and minor reflecting surface of a cover, and the S-band feed is looped around around the X-band feed, and the polarization mode of X-band feed and S-band feed all adopts double-circle polarization, and feeding classification all adopts rear feed.The S-band feed is looped around around the X-band feed, and two wave bands share a cover major-minor reflecting surface.
The X-band feed is fixed on subreflector (hyperboloid) near on the focus of primary reflection surface, adopts five loudspeaker forms shown in Figure 3, is combined by five square opening footpath diagonal horns, and the S-band feed is looped around around the X-band feed, adopts quaternary circular patch antenna form.The S-band feed adopts the quaternary paster antenna, as shown in Figure 4, and by what form around four circular patch antennas of X-band feed.When the primary irradiation ripple of X/S wave band feed arrives subreflector, reflexed to primary reflection surface by subreflector, form the X/S directional diagram in the far field through secondary reflection.Use the same antenna of two different-wavebands of electric axis 5 drivings of same servo structure to realize guiding and tracking.Same servomechanism drives the same antenna of two different-wavebands.
Patch antenna element is made up of four blocks of dielectric-slabs, a metal base plate and two connectors, connector is sub-miniature A connector, and inner wire links to each other with metal coating on the dielectric-slab, and outer conductor links to each other with metal base plate, by controlling the phase place at two connector places, just can realize the circular polarization feed.
Claims (5)
1. a two waveband double-circle polarization is total to the bore reflector antenna, comprise, X-band feed (3) and the S-band feed (4) of primary reflection surface (1), subreflector (2), employing double-circle polarization, it is characterized in that X-band feed and S-band feed share the major and minor reflecting surface of a cover, all are positioned on the real focus of subreflector, the S-band feed is looped around around the X-band feed, and the X-band feed overlaps with the electric axis of S-band feed, uses same servomechanism to drive, and combines and carries out rear feed.
2. two waveband double-circle polarization according to claim 1 is total to the bore reflector antenna, it is characterized in that, the X-band feed is fixed on subreflector (1) near on the focus of primary reflection surface.
3. two waveband double-circle polarization according to claim 1 is total to the bore reflector antenna, it is characterized in that, the X-band feed is combined by five square openings footpath diagonal horns.
4. two waveband double-circle polarization according to claim 1 is total to the bore reflector antenna, it is characterized in that the S-band feed is looped around around the X-band feed, adopts quaternary circular patch antenna form.
5. two waveband double-circle polarization according to claim 1 is total to the bore reflector antenna, it is characterized in that, same servomechanism drives the same antenna of two different-wavebands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320205715 CN203218457U (en) | 2013-04-23 | 2013-04-23 | Dual-band dual-circular-polarization aperture sharing reflector antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320205715 CN203218457U (en) | 2013-04-23 | 2013-04-23 | Dual-band dual-circular-polarization aperture sharing reflector antenna |
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| CN203218457U true CN203218457U (en) | 2013-09-25 |
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| CN 201320205715 Expired - Fee Related CN203218457U (en) | 2013-04-23 | 2013-04-23 | Dual-band dual-circular-polarization aperture sharing reflector antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016061825A1 (en) * | 2014-10-24 | 2016-04-28 | 华为技术有限公司 | Antenna system and processing method |
| CN109066085A (en) * | 2018-08-01 | 2018-12-21 | 中国航空工业集团公司雷华电子技术研究所 | Dual-polarized single pulse tracks reflecting plane aerial feed source |
| CN113687313A (en) * | 2021-07-20 | 2021-11-23 | 西安空间无线电技术研究所 | Satellite-borne X + S double-frequency SAR system based on double-reflector antenna |
| WO2022044914A1 (en) * | 2020-08-31 | 2022-03-03 | 株式会社小糸製作所 | Vehicular radar system and vehicle |
| US11493622B1 (en) * | 2018-02-08 | 2022-11-08 | Telephonics Corp. | Compact radar with X band long-distance weather monitoring and W band high-resolution obstacle imaging for landing in a degraded visual environment |
-
2013
- 2013-04-23 CN CN 201320205715 patent/CN203218457U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016061825A1 (en) * | 2014-10-24 | 2016-04-28 | 华为技术有限公司 | Antenna system and processing method |
| US11493622B1 (en) * | 2018-02-08 | 2022-11-08 | Telephonics Corp. | Compact radar with X band long-distance weather monitoring and W band high-resolution obstacle imaging for landing in a degraded visual environment |
| CN109066085A (en) * | 2018-08-01 | 2018-12-21 | 中国航空工业集团公司雷华电子技术研究所 | Dual-polarized single pulse tracks reflecting plane aerial feed source |
| CN109066085B (en) * | 2018-08-01 | 2021-02-19 | 中国航空工业集团公司雷华电子技术研究所 | Dual-polarized monopulse tracking reflector antenna feed source |
| WO2022044914A1 (en) * | 2020-08-31 | 2022-03-03 | 株式会社小糸製作所 | Vehicular radar system and vehicle |
| CN113687313A (en) * | 2021-07-20 | 2021-11-23 | 西安空间无线电技术研究所 | Satellite-borne X + S double-frequency SAR system based on double-reflector antenna |
| CN113687313B (en) * | 2021-07-20 | 2023-12-29 | 西安空间无线电技术研究所 | Satellite-borne X+S dual-frequency SAR system based on dual-reflector antenna |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |